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 TM 55-1905-217-34
(a) The relief valve is located in the engine room, near the aft bulkhead, just below the deck, and near the pump
discharge valves. It is connected into the pressure line between the check valves and the 10 gallon tank.
(b) Drain steering hydraulic system to a level below the valve. Refer to TM-55-1905-217-12, figures 1-9 and 1-10.
(c) Disconnect the tube connections and remove the valve.
(3) Flow control valve removal.
(a) This valve is in the engine room, near the aft bulkhead, just below the deck, and near the relief valve. It has
three tube connections, one in the pressure line, one to the helm unit, and the other connection is to the return line to the
tank.
(b) Drain steering hydraulic system to a level below the valve. Refer to TM 55-1905-217- 12, figures 1-9 and 1-10.
(c) Disconnect the tube connections and remove the valve.
c. Steering System Valves Removal - Hulls
8520-8560 and 8580-8618.
(1) Relief valve removal.
(a) This relief valve is located in the helm unit well, just above the engine room, with access from the engine room
or through pilot house access plate. It is connected between the pressure line and the return line from helm unit to tank.
(b) Drain steering hydraulic system to a level below the valve. Refer to TM 55-1905-217- 12, figures 1-9 and 1-10.
(c) Disconnect pipe connections and remove valve.
(2) Flow divider removal.
(a) The flow divider is located in the center of the engine room just below the deck. It has pipe connections in the
pressure line to the helm unit and also has hose connecting lines to tank lines.
(b) Drain steering hydraulic system to a level below the valve. Refer to TM 55-1905-217- 12, figures 1-9 and 1-10.
(c) Disconnect hose connections and pipe connections and remove the flow divider.
(3) Counterbalance valve removal.
(a) The counterbalance valves (2) are in the center of the lazarette just below the deck.
(b) Drain the steering hydraulic system to a level below the valves.
(c) Disconnect hoses and pipes and remove valves.
d. Steering System Valves, Disassembly and Repair - Hulls 8500-8519.
Refer to figures 4-32, 4-33, 4-34, and replace packing gaskets and/or mounting hardware as necessary.
Figure 4-33. Steering system flow control valve, cross-section view.
4-50
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